Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 664 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the bowl (c) how many drops form
2. 2.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the drop height (c) the kind of paper (d) the paper clip
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) water (d) turmeric powder
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a stiff postcard (d) a battery cell
6. 6.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) air (d) very salty water
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) sunlight (b) a mirror (c) a magnet (d) turmeric powder
8. 8.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the length of the blades (b) time to reach the floor (c) the paper clip (d) the drop height
10. 10.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
11. 11.True or false: turmeric powder is needed for the density tower. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) butter going runny (b) ice becoming water (c) snow turning to water (d) drops under a pot lid
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.True or false: a flower stem lets water climb up it. (a) True (b) False
15. 15.True or false: yeast is not needed for the water cycle bowl. (a) True (b) False
16. 16.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
18. 18.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a misty bathroom mirror (b) snow turning to water (c) drops under a pot lid (d) drops on a cold glass
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
22. 22.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
24. 24.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a sunny window
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it sinks (d) it floats higher
29. 29.True or false: ice becoming water is condensation. (a) False (b) True
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
31. 31.🌈 How many colours do we name in a rainbow (VIBGYOR)?
32. 32.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
34. 34.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) steel is very light (d) sea water is warm
35. 35.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it floats away (d) it turns brighter
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
37. 37.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
38. 38.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a flower stem (d) a piece of chalk
39. 39.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
40. 40.🧺 Do we need a mirror for the paper helicopter? (a) not needed (b) needed

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